Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 16 · 40 questions

Robot tip (Find the topic, use the idea): Find the topic: robot basics, moving, gears, sensors or programs. Use that lesson’s rule — sense/think/act, teeth × turns, circumference × turns, 17 cm per ms, follow every line. Safety answers are always: switch off, stay out of reach, an adult nearby, the emergency stop.

1. 1.🗺️ A robot is on a grid at (4, 5), facing north. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
   forward 3
   turn left
   forward 2
   turn right
   forward 1
   turn left
   forward 2
   On which square does it stop? (a) (9, 0) (b) (1, 9) (c) (0, 9) (d) (2, 9)
2. 2.🔦 A robot has a left and a right light sensor. Below 50 means black. The left sensor reads 80 and the right sensor reads 35. Which sensor is over the black line? (a) neither sensor (b) the right sensor (c) the left sensor (d) both sensors
3. 3.⚙️ An 8-tooth driver gear turns a 16-tooth driven gear. The driven gear turns 1 time. How many times did the driver turn?
4. 4.🔍 Which sensor helps a robot warn if motors get hot? (a) a touch sensor (b) a light sensor (c) a temperature sensor (d) a sound sensor
5. 5.🦾 A servo moves from 20° to 160°. How many degrees does it turn?
6. 6.🤖 In “if (distance < 20)”, what runs when the distance is exactly 20? (a) the if part (b) the else part (c) both parts (d) neither part
7. 7.🛞 A robot wheel has a radius of 21 cm. Using π = 22/7, what is its circumference (in cm)?
8. 8.🛞 With the same motor speed, a bigger wheel makes the robot go … (a) nowhere (b) backwards (c) faster (d) slower
9. 9.🧭 A robot should turn right 45°, but its gyro shows it turned 56°. How many degrees must it turn back to the left?
10. 10.🔍 Which is the odd one out? (a) fix it while it runs (b) poke fingers in gears (c) stay behind safety lines (d) open the battery pack
11. 11.🔦 A light sensor reads 30 over black and 60 over white. A good threshold is halfway between them. What is it?
12. 12.🛞 The diameter of a wheel is how many times its radius? (a) 3 (b) 4 (c) 2 (d) 1
13. 13.True or false: “teach with kindness” is a job robots do well. (a) True (b) False
14. 14.🛞 Both wheels of a two-wheeled robot turn forward. The left wheel turns at 40 turns a minute and the right wheel at 10 turns a minute. What does the robot do? (a) goes straight forward (b) curves to the left (c) curves to the right
15. 15.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
16. 16.📋 A robot program runs:
    speed = 20
    speed = 10
    speed = 50
    What is the speed at the end?
17. 17.🧠 A robot keeps repeating sense → think → act. This repeating is called … (a) a gear (b) a battery (c) a crash (d) a loop
18. 18.🔁 A drawing robot runs:
    repeat 5 { forward 25 cm; turn right 72° }
    How many cm does it drive in all?
19. 19.🦾 A servo turns 60° every 100 ms. How many milliseconds does it take to turn 90°?
20. 20.📋 A robot’s battery is at 100%. Each “forward 10 cm” uses 1% and each turn uses 2%. It runs:
    repeat 4 { forward 10 cm; turn right 90° }
    What is the battery level at the end (in %)?
21. 21.🗺️ A robot is on a grid at (1, 7), facing west. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
    forward 1
    turn right
    forward 2
    turn right
    forward 1
    turn right
    forward 3
    On which square does it stop? (a) (2, 6) (b) (1, 9) (c) (1, 6) (d) (6, 1)
22. 22.🗺️ A robot is on a grid at (7, 4), facing east. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
    forward 1
    turn left
    forward 2
    turn right
    forward 1
    turn left
    forward 3
    On which square does it stop? (a) (9, 9) (b) (9, 10) (c) (10, 9) (d) (9, 6)
23. 23.🧠 Sense, think or act: “it decides to stop”? (a) sense (b) act (c) think
24. 24.🔍 Which is the odd one out? (a) crawl in narrow pipes (b) lift very heavy parts (c) teach with kindness (d) search a smoky building
25. 25.🛑 A robot moves 30 cm every second and checks its distance sensor every 200 ms. How far does it move between two checks (in cm)? =
26. 26.🛞 A robot’s wheels have a diameter of 20 cm. Using π = 3.14, how far does the robot roll when the wheels turn 2 times (in cm)? =
27. 27.🌾 How do farm robots help farmers? (a) sing to the cows (b) eat the weeds (c) pick, weed and spray (d) sell the crops
28. 28.📡 A distance sensor sends a sound pulse and hears the echo 9 ms later. Sound travels about 34 cm every millisecond. How far away is the object (in cm)?
29. 29.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
30. 30.🏆 In a robot team, who keeps the design diary? (a) programmer (b) note-keeper (c) builder (d) team captain
31. 31.🧭 A robot spins 90° every second. How many seconds does it take to turn 270°?
32. 32.True or false: “measure parts exactly” is a job robots do well. (a) True (b) False
33. 33.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
34. 34.Which of these is a responsible way to use robots and AI? (a) design for all people (b) build a bully robot (c) copy AI work as your own (d) post photos of strangers
35. 35.🛞 What is the main difficulty with legs for a robot? (a) too fast on floors (b) harder to balance (c) they are too cheap (d) they never tire
36. 36.🏆 In a robot team, who fixes loose parts? (a) note-keeper (b) tester (c) team captain (d) builder
37. 37.True or false: the controller runs the program. (a) False (b) True
38. 38.🛞 A robot’s wheels have a diameter of 21 cm. Using π = 22/7, how many full turns must they make to roll 132 cm?
39. 39.⚙️ A 20-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
40. 40.🦾 A servo turns 60° every 100 ms. How many milliseconds does it take to turn 60°?

Free robotics lessons, practice and worksheets at talentjr.in/robotics-for-kids